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Current Measurement ( ) ……………………015 【6】MAINTENANCE Maintenance and Inspection ………………………………017 Calibration and Inspection …………………………………017 Storage ………………………………………………………017 Battery and Fuse Replacement …………………………017 【7】AFTER-SALE SERVICE Warranty and Provision ……………………………………019 Repair ………………………………………………………019 SANWA web site……………………………………………020 【8】SPECIFICATIONS General Specifications ……………………………………021 Measuring Range and Accuracy …………………………022...
*Before use, read the following safety precautions. This instruction manual explains how to use your new digital multi meter CD772. Before use, please read this manual thoroughly to ensure correct and safe use. After reading it, keep it together with the product for reference to it when necessary.
05. Never use the meter near equipment which generates strong electromagnetic waves or is charged. 06. Never use the meter if the meter or test leads are damaged or broken. 07. Never use the meter with the case or battery lid removed. 08.
[2] APPLICATIONS AND FEATURES 2-1 Applications This is a digital multimeter designed for measurement in the ranges of CAT. II 1000V and CAT. III 600V. This meter is useful for measuring / analyzing circuits of small communication devices, home electric appliances and batteries within the CAT. III environment.
[3] NAMES OF COMPONENT UNITS 3-1 Meter Data hold/backlight LCD display button Select button Range hold button Continuity lamp Relative button Power switch & function switch measuring terminal Measuring Safety cap terminal + COM (common) terminal measuring terminal 3-2 Test Leads Removable test pin covers When not covered:CAT.Ⅱ...
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3-3 Display Indication of numerical value. Indication of relative mode operation. Indication of negative sign of numerical data. Indication of AC measuring function operation. Indication of DC measuring function operation. Indication of auto range mode operation. Not used with this meter. Indication of diode test function operation.
[4] DESCRIPTION OF FUNCTIONS 4-1 Power Switch & Function Switch Turn this switch to turn on and off the power and select a measuring function. 4-2 Measuring Function Selection: SELECT When the 00000 button is pressed, the functions change as follows: •...
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4-5 Range Hold: RANGE HOLD When the XXXXXXX button is pressed, the meter will be set in the manual mode and the range will be fixed. (“XXXXXX” will disappear from the display.) In the manual mode, each time this button is pressed, the range changes.
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4-9 AC Detection Method This meter employs the root-mean-square value method and indicates the magnitude of AC as the same amount of work as DC. Root-mean-square values of sinusoidal waves and such non- sinusoidal waves as square waves and chopping waves can be measured by the true RMS (Root Mean Square) circuit.
[5] MEASURING PROCEDURE WARNING 1. Do not apply an input signal exceeding the maximum rated input of each function. 2. During measurement, do not change the function switch. 3. During measurement, do not touch the test pin side of the flange of the test lead.
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5-2 Voltage Measurement (V) Function Max. Rated Input Range DC 1000V 400.0mV, 4.000V, 40.00V, 400.0V, 1000V AC 1000V 4.000V, 40.00V, 400.0V, 1000V Example of DCV Example of ACV measurement measurement DCV and ACV Selection Remarks: • This meter is of true root-mean-square value response (AC coupling).
5-3 Resistance Measurement (000), Diode Test (000), Continuity Check (000) WARNING Never apply a voltage to the measuring terminals. 5-3-1 Resistance measurement (000) Function Max. Rated Input Range 400.0 , 4.000k , 40.00k , 40.00M 400.0k ,4.000M , 40.00M Resistor Remarks: If measurement is affected by noises, shield the object to...
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5-3-3 Continuity check (00) Remarks: Resistance • Continuity buzzer measurement Diode test sound and continuity Continuity check lanp on range: 0 Selection (±45 ) Continuity lamp on 5-4 Frequency Measurement (000) CAUTION Measurement prohibited Never use the meter for measuring frequencies to ground as the earth leakage breaker may trip.
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Remarks: • Input sensitivity: 3 Vrms or over • Zero cross (+ potential – potential + potential) frequencies can be measured. Frequencies of + potential only or – potential only such as logic pulses cannot be measured. • Frequencies less than 1 Hz cannot be measured. •...
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5-6 Temperature Measurement WARNING Measuring temperature involves such hazard as getting burnt depending on temperatures to measure and measuring environment. CAUTION Do not apply a voltage above 50 mV DC to the input terminal. Function Input Terminal Measuring Range Built-in Fuse 0.5A/1000V Fuse Breaking capacity 30kA -20.0°C ~ 300.0°C...
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5-7 Current Measurement (00000000000) WARNING 1. Never apply a voltage to the measuring terminals. 2. Never apply an input exceeding the maximum rated current. 3. Be sure to connect the meter in series via a load. Correct measuring method Wrong measuring method Power supply Load CAUTION...
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µA · mA measurement Function Input Terminal Built-in Fuse 0.5A/1000V Fuse Breaking capacity 30kA A measurement Function Input Terminal Built-in Fuse 16A/1000V Fuse Breaking capacity 30kA Remarks: • Maximum 20A can be measured if the measurement time is less than 10 seconds.
• Is the plug when inserted to the input terminal not loose? If any of the above problems exists, stop using the meter and request for repair. 6-2 Calibration and Inspection For more information, please contact Sanwa’s authorized agent / distribute service provider, listed in our website. See section 7-3.
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WARNING 1.To avoid electric shock, do not remove the rear case with an input being applied to the measuring terminals. Also, before starting replacement, make sure the power of the meter is OFF. 2.Be sure to use the replacement fuse of the same rating. Never use a substitute for the fuse nor short the meter.
(1) year from the date of purchase. This warranty policy is valid within the country of purchase only, and applied only to the product purchased from Sanwa authorized agent or distributor. Sanwa reserves the right to inspect all warranty claims to determine the extent to which the warranty policy shall apply.
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Please contact Sanwa authorized agent / distributor / service provider, listed in our website, in your country with above information. An instrument sent to Sanwa / agent / distributor without above information will be returned to the customer. Note: 1) Prior to requesting repair, please check the following: Capacity of the built-in battery, polarity of installation and discontinuity of the test leads.
[8] SPECIFICATIONS 8-1 General Specifications ∆-∑ method Operation method AC measuring method True RMS value method 4000 counts Sampling rate Approx. 3 times/sec. Auto and Manual (Some with Manual only or Auto only) Range selection “OL” shown in numerical part. (1000V DC/AC, 10A excluded.) Over-range indication Polarity indication automatic “–”...
8-2 Measuring Range and Accuracy Temperature: 23±5°C, humidity: 80% RH max. (no condensation), voltage 2.4 V or above. rdg (reading): Read value, dgt (digit): Number of counts of last digit DCV voltage Range Accuracy Input Resistance Remarks ±(0.5%rdg+2dgt) 400.0mV Approx. 100M 4.000V Approx.
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Frequency Range Accuracy Remarks • Auto range only 5.000Hz • The data hold and relative functions cannot be used. 50.00Hz • Sensitivity: 3 Vrms or over. • Frequency less than 1 Hz cannot be measured. 500.0Hz • Input resistance ≧ Approx. 2 k ±(0.3%rdg+3dgt) •...
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* Accurate measurement may not be possible in places near a transformer, large-current line, etc. where a strong magnetic field is present or near radio equipment, etc. that generates a strong electric field. Accuracy calculation Example: DCV function True value: 100 mV Range accuracy: 400 mV range ...
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